Shaft-coupling.



No. 768,694. PATENTED AUG. 30, 1904.

- I G. R. RICH.

SHAFT COUPLING.

APPLICATION FILED JULY 24, 1903.

no MODEL.

UNITED STATEs Patented August 30, 1904.

PATENT OFFICE.

GEORGE R. RICH, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE GEO. R. RICH MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A COR- PORATION OF ILLINOIS.

SHAFT-COUPLING.

SPECIFICATION forming part of Letters Patent No. 768,694, dated August 30, 1904. Application filed July 24,1903. Serial No. 166,815. (No model.)

To all whom it may concern:

Be it known that I, GEORGE R. RICH, a citi- In the aforesaid drawings, Figure 1 is a plan of my improved device. Fig. 2 is a section in the line 2 2 of Fig. 1, and Fig. 3 is a section in the line 3 3 of'Fig. 2 looking in the direction of the arrow.

Referring to the drawings, A B are the two shafts which are to be secured together bymy shaft-coupling.

C is a cylindrical head of larger diameter than the shaft. This head is centrally perforated, and the central perforation is coned at both ends to produce two conical surfaces 0 0. Between the head C and the shafts A B are a plurality of segments D, which are cylindrical on their inner surfaces to fit shafts and conical on their outer surfaces to engage with the conical surfaces 0 0 on the interior of the head. The number of segments D provided is of course subject to variation; but I prefer to use six segments, three surrounding each shaft. Bolts E, oppositely screw-threaded at their two ends and provided with a central headed portion a for engagement with a wrench, connect the segments D together in pairs. Openings c are provided in the wall of the head C, by which the bolts can be reached with a suitable wrench.

It should be noticed that the inner conical surfaces of the head are unbroken, so that in the construction of the head these faces can be bored out perfectly to fit the segments, thereby insuring a more perfect alinement of the two shafts which it is desired to couple up.

' readily apparent.

to the Furthermore, with this construction no other interlockIng devices between the segments and the shafts or between the segments and the head are necessary, the bolts and segments effectuallylocking the shafts to the head.

. The operation of this device will now be The shafts are placed in the proper position and the segments fitted in place. The three bolts E are then screwed up, which draws the segments D together, and as they approach each other they are wedged by engagement with the conical surfaces 0 into tight contact with the shafts. The shafts can be brought into perfect alinement by turning the proper bolts to produce this result.

I realize that considerable variations are possible in the details of this construction without departing from the spirit of the invention, and I therefore do not intend to limit myself specific form herein shown and described.

I claim as new and desire to secure by Letters Patent- In a shaft-coupling, the combination with two shafts arranged substantially in line, of a hollow head surrounding said shafts, having a plurality of openings in its Wall approximately at its middle portion, and having two frustoconical inner surfaces, flaring outward to its ends,a plurality of pairs of segments arranged between the shafts and the head, the segments being substantially cylindrical upon their inner surfaces to fit the shafts and conical upon their outer surfaces 'to fit the conical surfaces .of the head, and bolts having right and left hand threads, engaging with the pairs of segments to draw them together, independently of each other, to bring the said shafts into 21st day of July, A. D. 1903.

GEO. R. RICH.

Witnesses:

Grass. 0. SHERVEY, IVIATTIE B. BLIss. 

